Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 6 20.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 07/03/2021   08:49:04   (  78.22,  24.77) 07/03/2021   08:47:56  (  78.20,  22.17)   59.04                68
 07/03/2021   09:39:54   ( -78.44,-169.16) 07/03/2021   09:38:51  ( -78.44,-169.01)    3.47                63
 07/03/2021   10:30:38   (  78.42,  -1.73) 07/03/2021   10:29:50  (  78.43,  -1.87)    3.14                48
 07/03/2021   11:21:23   ( -78.44, 165.45) 07/03/2021   11:20:51  ( -78.45, 165.57)    2.94                32
 07/03/2021   12:12:08   (  78.46, -27.34) 07/03/2021   12:11:50  (  78.44, -27.29)    2.77                18
 07/03/2021   13:02:52   ( -78.44, 140.07) 07/03/2021   13:02:51  ( -78.47, 140.14)    3.00                 1
 07/03/2021   13:53:37   (  78.46, -52.73) 07/03/2021   13:53:50  (  78.45, -52.72)    1.61                13
 07/03/2021   14:44:21   ( -78.45, 114.69) 07/03/2021   14:44:51  ( -78.48, 114.72)    3.60                30
 07/03/2021   15:35:06   (  78.46, -78.11) 07/03/2021   15:35:50  (  78.46, -78.15)    1.07                44
 07/03/2021   16:25:51   ( -78.49,  89.08) 07/03/2021   16:26:52  ( -78.45,  89.06)    3.64                61
 07/03/2021   17:16:35   (  78.47,-103.49) 07/03/2021   17:17:50  (  78.47,-103.57)    1.80                75